Pyxis ST-601
Operation Manual
9
Figure 1
.
ST-601 and Pyxis Bluetooth adapter (MA-WB) connected in series to controller
Download and install the uPyxis app from
App Store
or
Google Play
.
Turn on Bluetooth in the phone (please do not pair your device Bluetooth to MA-WB
directly, the uPyxis APP will do the pairing). Open the uPyxis app in the phone. Swipe
downward to refresh the phone screen to scan the available Pyxis Bluetooth devices. The
discovered devices will be listed (Figure 2).
Tap the discovered ST-601 probe to connect to the probe. uPyxis app can identify the probe type if
multiple Pyxis probes are discovered in the scan. For legacy old generation probes, a dialog message
window will be displayed to ask the user to tell the app the probe type. In this case, please select ST-601
as applicable.
As shown in figure 3, the calibration page after uPyxis is connected to the probe via the Pyxis Bluetooth
adapter displays the current ClO2 concentration. Three functional tabs are available in this page:
Zero
Calibration, Slope Calibration, and 4-20mA Span
.
4.1.1
Calibration
Place the probe in deionized water and tap
Zero Calibration
to carry out the zero-point calibration.
Place the probe in a known ClO2 calibration standard and tap
Slope Calibration
to carry out the slope
calibration. Enter the ClO2 concentration in the dialog window as in figure 4. For the best result, the ClO2
standard concentration should be in the range of 1000ppm to 3000ppm for ST-601.
The calibration solution could be the sample ClO2 itself (in the chemical tank). The concentration of CLO2
in the sample water can be determined with using a Pyxis SP-910 Handheld meter using ClO2 High Range
Direct Read method (0-1,500ppm), or by conventional titration method.